The Oscar nominated actress will ring in her 20th birthday with a ‘Bridesmaids’ themed party.

“I'm a big fan of the film ‘Bridesmaids’,” she said. “We're going to try and get a chocolate fountain, an Eiffel Tower, heart-shaped cookie, little toy dogs as party favors, and everybody has to wear a bridesmaid dress.”

Saoirse, who is currently over in the States working on upcoming film ‘Stockholm, Pennsylvania’ with former ‘Sex and The City’ star Cynthia Nixon (Miranda), wants to celebrate the big day in the US before heading back home to Ireland.

“My birthday isn't until April—but while I'm still in the States with all my mates over here,” she told US Elle.

Despite the Parisian theme and abundance of Bridesmaids this won’t be a ‘girls only’ affair. Men are welcome – provided they dress like Boyle native Chris O’Dowd.

“If you're a guy, you have to wear a cop outfit like Chris O'Dowd. So I'm really excited about it.”

“It's not going to be quite as fancy as the bridal shower in the film, but if I had enough money, I would give out real dogs,” she said.

Grand Hotel Budapest is out now, and Saoirse says working with Wes Anderson and the rest of the cast was like being part of one “big, amazing family.”

“It felt surreal to sit down every night for dinner with Wes at the head of this big table and people like Bill Murray, Ralph Fiennes and Tilda Swinton sitting around with you,” she said.

“It would have been easy to have felt intimidated by that except they all had this wonderful rapport and relaxed way of being together that made you feel welcome and part of this amazing family.”